django way to get and save a tree of folders and files

Question

When I came across a project to save a tree of files - means including subdirectories and files, not just files - I couldn't find an appropriate solution for the problems.

• note: This question is not the same as this. They speak of two different things, mine: How to save, his/hers: How to show - a tree of files

I do not want to write the code purely by myself or use a library that isn't suggested by Django.

To understand better, let me say a user will upload these three files:

• src/statistics
• test/tests
• img/9744t3vo5.png though files can be placed in root or home or any other place in the file system (let me say simpler: files path should be relative)

But the problem is how to get & save files in that manner (with relative path took effect) not the issue to show files that is solved in the question linked above